CVE catalog
CVE-2026-43996
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, the bounds check in TGAInput::decode_p
- Severity
- Medium · CVSS 5.5
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 0.18% · Oct 25, 2026
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, the bounds check in TGAInput::decode_pixel computes k + palbytespp as unsigned 32-bit arithmetic. When k = 0xFFFFFFFC and palbytespp = 4, the addition wraps to 0, which compares less than palette_alloc_size and passes the check. The subsequent palette access uses the unwrapped k (0xFFFFFFFC) as the index, reading ~4 GB past the start of the palette buffer — SEGV. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | openimageio | sid | 3.1.18.1+dfsg-2 | fixed |
| Debian | openimageio | forky | 3.1.18.1+dfsg-2 | fixed |
| Debian | openimageio | trixie | 2.5.18.0+dfsg-1 | vulnerable |
| Debian | openimageio | bookworm | 2.4.7.1+dfsg-2 | not affected |
| Cpe | openimageio | Not reported | 3.0.18.0 | fixed |
| Cpe | openimageio | Not reported | 3.1.13.0 | fixed |
| Cpe | openimageio | Not reported | Not reported | unknown |
| Cpe | openimageio | Not reported | Not reported | unknown |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | openimageio | source | sid | 3.1.18.0+dfsg-2 | not yet assigned | Not reported | [1139915] |
| Debian | openimageio | source | forky | 3.1.18.0+dfsg-2 | not yet assigned | Not reported | [1139915] |
| Debian | openimageio | source | trixie | (unfixed) | not yet assigned | Not reported | [1139915] |
| Debian | openimageio | source | bookworm | Not affected | unimportant | Not reported | [1139915] |
| Cpe | openimageio | cpe | Not reported | 3.0.18.0 | Not reported | Not reported | Not reported |
| Cpe | openimageio | cpe | Not reported | 3.1.13.0 | Not reported | Not reported | Not reported |
Notes
[trixie] openimageio: Minor issue
OpenFactory catalog packages
[Debian 13 (Trixie)]
- [libopenimageio2.5]Affected
Source package: [openimageio]
Details (2)
2.5.18.0+dfsg-1+b1· amd64 · trixieAffected
nvd · openimageio · debian · 13
2.5.18.0+dfsg-1+b1· arm64 · trixieAffected
nvd · openimageio · debian · 13
- [libopenimageio-dev]Affected
Source package: [openimageio]
Details (2)
2.5.18.0+dfsg-1+b1· amd64 · trixieAffected
nvd · openimageio · debian · 13
2.5.18.0+dfsg-1+b1· arm64 · trixieAffected
nvd · openimageio · debian · 13
- [libopenimageio-doc]Affected
Source package: [openimageio]
Details (2)
2.5.18.0+dfsg-1· all · trixieAffected
nvd · openimageio · debian · 13
2.5.18.0+dfsg-1· all · trixieAffected
nvd · openimageio · debian · 13
- [openimageio-tools]Affected
Source package: [openimageio]
Details (2)
2.5.18.0+dfsg-1+b1· amd64 · trixieAffected
nvd · openimageio · debian · 13
2.5.18.0+dfsg-1+b1· arm64 · trixieAffected
nvd · openimageio · debian · 13
- [python3-openimageio]Affected
Source package: [openimageio]
Details (2)
2.5.18.0+dfsg-1+b1· amd64 · trixieAffected
nvd · openimageio · debian · 13
2.5.18.0+dfsg-1+b1· arm64 · trixieAffected
nvd · openimageio · debian · 13
[Debian 12 (Bookworm)]
- [libopenimageio2.4]Not affected
Source package: [openimageio]
Details (2)
2.4.7.1+dfsg-2· amd64 · bookwormNot affected
nvd · openimageio · debian · bookworm
2.4.7.1+dfsg-2· arm64 · bookwormNot affected
nvd · openimageio · debian · bookworm
- [libopenimageio-dev]Not affected
Source package: [openimageio]
Details (2)
2.4.7.1+dfsg-2· amd64 · bookwormNot affected
nvd · openimageio · debian · bookworm
2.4.7.1+dfsg-2· arm64 · bookwormNot affected
nvd · openimageio · debian · bookworm
- [libopenimageio-doc]Not affected
Source package: [openimageio]
Details (2)
2.4.7.1+dfsg-2· all · bookwormNot affected
nvd · openimageio · debian · bookworm
2.4.7.1+dfsg-2· all · bookwormNot affected
nvd · openimageio · debian · bookworm
- [openimageio-tools]Not affected
Source package: [openimageio]
Details (2)
2.4.7.1+dfsg-2· amd64 · bookwormNot affected
nvd · openimageio · debian · bookworm
2.4.7.1+dfsg-2· arm64 · bookwormNot affected
nvd · openimageio · debian · bookworm
- [python3-openimageio]Not affected
Source package: [openimageio]
Details (2)
2.4.7.1+dfsg-2· amd64 · bookwormNot affected
nvd · openimageio · debian · bookworm
2.4.7.1+dfsg-2· arm64 · bookwormNot affected
nvd · openimageio · debian · bookworm
Observed:
References
- [https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-mq8j-73c4-cr55]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-43996]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-43996]
- [https://security-tracker.debian.org/tracker/CVE-2026-43996]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43996.json]
[Debian Security Tracker] · [FIRST EPSS] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]